Device for supplying liquid to engine-cylinders.



D. McK'. HEPBURN. DEVICE FOR SUPPLYIN'G LIQUID T0 ENGINE CYLINDERS.APPLICATION FILIID FEB. 7. I916.

1,251,371. I w Patented Dec.25,1917.

1 1G 1L I Flam lu-uamfor UNITED snares PA ENT. rrron.

DEVICE FOR SUPPLYING LIQUID TO ENGINE-CYLINDERS.

Specification of Letters Patent.

Patented Dec. 1917.

Application filed February 7, 1916. Serial No. 76,545.

To all whom it may concern.-

Be it known that I, DoNALD McK. HEP- BURN, of Niagara, Falls, in thecounty of Niagara and State of New-York, have invented certain new anduseful Improvements in Devices for Supplying Liquid to Engine-Cylinders, whereof the following is a specification, reference being hadto the accompanying drawings.

) The most important embodiment, which is contemplated for my invention,is in combination with the cylinder of an internalcombustion engine,(especially such as are used in motor cars), for the purpose of'priming,

5 Cleansing, r lubricating the cylinder.

Broadly speaking, however, the invention relates to a device which iscapable of containing liquid and supplying it in controlled quantitiesto a cylinder whose interior is under relatively high pressure, allexternal communication with thelliquir-container being cut off duringthe periods of supply to the cylinder, but said container beingaccessible for replenishing the liquid.

i'. In the accompanying drawings, I have" illustrated the device in itspreferred form, Figure I, being partly a vertical axial section andpartly a view in side elevation indicating by dotted lines a portion orthe wall l of the cylinder to which it is applied.

Fig. 11, is a top or plan view of the device itself.

Fig. 111, is an inverted plan view thereof, the representation of thecylinder wall in these last mentioned figures being omitted.

The device comprises a chamber 1, adapted to contain a substantialquantity of the liquid to be supplied. the contour of the wall of saidchamber being preferably that of an oblate sphere, as indicated in thecross section of Fig. I. A vertical inlet duct 2, leads upward from theaxial region of the chamber 1, and terminates in a funn el-shaped mouth3. A rotatable valve 4., is seated in the duct 2, so as to open or closecommunication therethrough, in this instance by the turning of thehandle 5.

From the lower axial region of the chamher 1, a vertical discharge duct6, extends downward and is provided with an external screw thread 7,upon its lower extremity, whereby it may be secured within an a erture13, in the wall 10, of a cylinder. aid duct 6, is controlled by therotatable valve 11, manipulated by a handle 12. The bore of said ducts.should be such as to permit the free admission of liquid and attendantdisplacement of the air or vapor within the chamber, without choking orclogging.

The stems of the valves 4, and 11, may be provided with springs 14, and1-5, respectively, to assist the proper seatingof vthe valves.

The operation of the device is as follows: l. v

The valve 11, being closed, and'the valve l, being open, the liquidWhich it is intended ultimately to introduce into the cylinder-forpriming, cleansing or lubricating purposes, such for instance asgasolene, is poured in through the inlet funnel 3, until the chamber 1,is properly charged. The valve 4, is then closed. 4

When it is desired to introduce the liquid into the cylinder, (which isunder internal pressure and whose wall is hot), the valve 11 is openedfor a brief period, the valve 4, being kept closed. The gaseous, orvaporous medium under pressure within the cylinder immediately forcesits way up through the liquid and into the chamber, until the pressureupon the upper surface of the liquid therein is equalized with thatwithin" thecylinder. This action is attended by discharge of the liquidinto the cylinder, the

amount of which can be controlled bymanipulation of the valve 11.

It should be noted that since the liquids which practically comprisethose intended to be thus introduced are themselves volatilizable, theresult of contact of the incoming liquid with the very hot wall of thecylinder is to instantly. convert said liquid into a vapor or gas, thusintensifying thev internal pressure within the cylinder and tending toblow out the contents thereof into the chamher 1, until such time asequilibrium of pressure has been restored.

The supply of liquid within the chamber Having thus described myinvention, I claim: Y

The combination with an engine cylinder, of a supply device eoniprisingaelosed liquidcontaining chamber provided with an upper inlet duct and alower discharge duet; a eontrolling valve "for said inlet duct; acontrolling valve for said outlet duet, said liquid containing chamberhaving a maximum diameter at a. distance above the outlet and the innerWall of the chamber curved continuously in a downward direction fromsaid maximum diameter to said outlet and free from shoulders whereby theliquid in said chamber will readily flow by gravity into the cylinderwhen the valve controlling the outlet is opened and the valvecontrolling the inlet is closed, and means for operating said valves,substantially as set forth.

In testimony whereof, I- have hereunto name, at Niagara Falls, New dayof January 1.916. MGK. HEPBURN.

signed my York, this thirty-first DONALD Witnesses STELLA Si-IERWEN,LoUIsn SHAW Hnrnumv.

